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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 1632 |
| 3 | 52889 |
| 4 | 1519630 |
| 5 | 45865837 |
| 6 | 1368968852 |
| 7 | 41030621948 |
| 8 | 1229127412701 |
| 9 | 36837288191422 |
| 10 | 1103993847036050 |
| 11 | 33088254114520559 |
| 12 | 991712287397354032 |
| 13 | 29723613829882860702 |
| 14 | 890879134522839275761 |
| 15 | 26701570968782131551720 |
[81,1632,52889,1519630,45865837,1368968852, 41030621948,1229127412701,36837288191422, 1103993847036050,33088254114520559, 991712287397354032,29723613829882860702, 890879134522839275761,26701570968782131551720] |